Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
mendacious
Grammar usage guide and real-world examplesUSAGE SUMMARY
The word "mendacious" is correct and usable in written English.
You can use it to describe a person who habitually lies or someone who has told a lie. For example: "The mendacious politician was caught in a lie about his true intentions."
✓ Grammatically correct
News & Media
Encyclopedias
Alternative expressions(8)
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Last April, the centre-right Fidesz party gained more than two-thirds of seats, ousting a socialist government widely perceived as corrupt and mendacious.
News & Media
The new government in 2010 made mendacious comparisons between Britain and Greece.
News & Media
High-flying public talk, when carried out in a climate of censorship, cannot help but be mendacious.
News & Media
The province was settled before the first world war by European farmers, lured to the area by free land and the mendacious promise of an "agreeable" climate (winters can feature temperatures of minus 50 degrees Celsius, and summers 40 degrees).
News & Media
Crude and mendacious it may be, but the Sun senses the popular mood.
News & Media
The anti-hero, Axel Vander, is a famous old literary critic, arrogant, lecherous and cruel, mendacious and a thief, possibly even a killer (Mr Banville's magic is that he makes one care about the monster).
News & Media
THE Shangri-La Dialogue, an annual powwow in Singapore for Asia-Pacific defence chiefs, has begun to follow a pattern: America and its friends in Asia line up to criticise China for its alleged transgressions in the seas around its coast; China issues fierce, mendacious and unconvincing rebuttals; everybody goes home.
News & Media
But the official claim that the country is a union of federal states was long mendacious.
News & Media
And there have already been four Iraq inquiries, though none as comprehensive as this one.Some reckon its failure to unearth masses of new information is down to a mix of mendacious reticence on the part of key witnesses and the pusillanimity of their inquisitors.
News & Media
Whether lacerating the Yes side's wishful, or mendacious, predictions for an independent Scotland's economic prospects; or glorifying the benefits of scale and co-operation that lie in the current arrangement, often using Biblical rhetoric, Mr Brown gave a glimpse of a brilliance that was seldom evident during his time in 10 Downing Street.
News & Media
After an inquiry into the Duggan killing ruled it lawful last month, he carefully condemned the mendacious handling of the case by the police, while offering no encouragement to the dead man's belligerent supporters.
News & Media
Expert writing Tips
Best practice
Use "mendacious" when you want to emphasize the deliberate and habitual nature of someone's lying. It carries a stronger connotation than simply saying someone is "dishonest".
Common error
Avoid using "mendacious" when describing unintentional errors or honest mistakes. "Mendacious" implies a deliberate intent to deceive, unlike a simple misunderstanding.
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested
Linguistic Context
The adjective "mendacious" primarily functions to describe someone or something as untruthful or dishonest. Ludwig's examples show it often modifies nouns like "claims", "statements", or "handling", emphasizing the deceitful nature of the described entity.
Frequent in
News & Media
89%
Encyclopedias
7%
Formal & Business
2%
Less common in
Science
1%
Wiki
0%
Academia
0%
Ludwig's WRAP-UP
The adjective "mendacious" is used to describe someone or something as dishonest or untruthful. Ludwig AI confirms that the term is grammatically correct and appropriate for use in written English. It is commonly employed in News & Media and Encyclopedias to express disapproval of deceitful behavior, statements, or claims. Related terms include "dishonest", "untruthful", and "deceitful", but "mendacious" often implies a more deliberate and habitual tendency to lie. While its register is neutral, it is best used to describe intentional deception, rather than unintentional errors.
More alternative expressions(10)
Phrases that express similar concepts, ordered by semantic similarity:
untruthful
More direct synonym, focusing on the lack of truth in a statement or behavior.
deceitful
Implies an intention to mislead or trick someone.
dishonest
Broader term, referring to a lack of honesty without necessarily implying deliberate lying.
fraudulent
Specifically refers to deception for financial or personal gain.
lying
Describes the act of telling lies, emphasizing the action rather than the inherent quality.
prevaricating
Involves avoiding the truth or speaking evasively.
false
Indicates something that is not in accordance with fact or reality.
fallacious
Describes something based on mistaken belief or reasoning, not necessarily intentional.
perjured
Refers to lying under oath, a specific legal context.
erroneous
Indicates something that is simply incorrect or contains mistakes.
FAQs
How can I use "mendacious" in a sentence?
You can use "mendacious" to describe someone who is habitually dishonest, for example: "The politician's "mendacious statements" were finally exposed by the press."
What is a simple synonym for "mendacious"?
A simple synonym for "mendacious" is "dishonest", although "mendacious" carries a stronger connotation of deliberate deceit.
Is it appropriate to describe an object as "mendacious"?
Yes, you can describe a statement, claim, or document as "mendacious" if it contains lies or falsehoods. For instance: "The report contained several "mendacious claims" about the company's profits."
What is the difference between "mendacious" and "misleading"?
"Mendacious" implies an intent to deceive, while "misleading" suggests that something gives a false impression, even if unintentionally. A "mendacious" statement is deliberately false, while a "misleading" statement may be technically true but still deceptive.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
86%
Authority and reliability
4.6/5
Expert rating
Real-world application tested